﻿import java.util.Scanner;

public class L {

	public static void main(String[] args) {
		
		Scanner input = new Scanner(System.in);
		System.out.println("请输入年份：");
		int year = input.nextInt();
		if((year%4==0)&&(year%100!=0)||year%400==0){
			System.out.println("闰年");
		}else{
			System.out.println("不是闰年");
		}		
	}
}